body{
    background: url('../images/Bg0.jpg') no-repeat center;
    background-size: cover;
    background-attachment: fixed;
}

.index{
    display: inline-block;
        padding: 15px 25px;
        font-size: 50px;
        cursor: pointer;
        text-align: center;
        text-decoration: none;
        outline: none;
        color: white;
        background: url(../images/btn.jpg) no-repeat center;
        border: 3px solid #000;
        border-radius: 15px;
        box-shadow: 0 9px #67341f;
}
.index:active {
    box-shadow: 0 5px black;
    transform: translateY(4px);
}
#choose{
    display: none;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#choose>*{
    margin: 100px;
    border: 3px solid #000;
}
#gameStart{
    position: absolute;
        top: 20%;
        right: 10%;
}
#aboutUs{
    position:absolute;
    top: 50%;
    right: 10%;
}
#back{
    font-size: 30px;
    position:absolute;
    top: 0;
    right: 80%;
}